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客运总站等大空间建筑物中的小零售店铺通常会堆放许多可燃物。在此类建筑中都安装用于整个大厅的机械排烟系统似乎不太可行。因此,在店铺中建造了包括水喷淋以及排烟等主动式消防系统的屋顶,着火时挡板将落下封闭店铺。此时应关注在封闭的小空间内发生轰燃的可能性。如果店铺没有完全封闭,烟气可能会扩散到店铺以外的空间。文中用火灾场模拟软件FDS3.1模拟了消防系统启动前店铺内的火灾环境。模拟的结果将有助于评估制定的消防安全条例以及相关的设计参数。研究结果证实了如果着火的店铺没有完全封闭,更大的烟气羽流将会在店铺以外的大空间中形成。此外,文中还对控制店铺火灾用的排烟系统及水喷淋系统的性能进行了评估。
Small retail stores in large space buildings such as bus terminals usually pile up a lot of combustibles. It seems not feasible to install a mechanical exhaust system for the entire hall in such buildings. As a result, roofs of active fire protection systems, including water sprinklers and smoke evacuation, were built in the shops and the baffles would fall off closed stores in the event of fire. At this point should be concerned about the possibility of a flash in a closed small space. If the store is not completely enclosed, the fumes may spread to spaces outside the store. In this paper, fire environment simulation software FDS3.1 is used to simulate the fire environment in the shop before the start of fire protection system. The results of the simulation will help to assess the fire safety regulations and the related design parameters. The results of the study confirm that larger flue gas plumes will form in large spaces outside the store if the burning shop is not completely closed. In addition, the article also evaluates the performance of the smoke exhaust system and water sprinkler system used to control the shop fire.